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Fix My Jag... Please

Q. I have a 1977 Jaguar XJ-6L with a 1988 350 Chevy engine. I started it up and it was idling a bit rough and I pulled up to a stop sign and it died. I can not find the fuel filter. So obviously I know nothing about Chevy engines. Help me. Where can I find out about these things that are so easy to fix? I also have to replace the brake caliper on the rear drivers side. I have all the parts and tools just not too sure how to do it. I have done lots of work on my '74 VW Bug so I'm not green.The Jag is automatic, has a 4 barrel carburetor, has about 100,000 km. Has P/S P/B not sure on the steering. I don't know too much about this car.


A. The fuel filter is located inside the carburetor itself. Locate where the metal fuel line enters the carburetor and you will see it connects to a big, 1" fitting. The fuel filter is inside that fitting. Remove the fitting and carefully remove it. There is a spring inside there that can pop out and go flying into oblivion. There were three types of filters, a short stone filter, a short paper filter and a long paper filter. Whichever it is, take note of which way it's facing and install the new one the same way. If you put the new filter in backwards, the engine will not run.

When you put the fitting back in be very, very careful you do not cross thread it. This is easy to do on a large fitting like this. It is soft metal and it doesn't take much to mess it up. Also don't over tighten it, you can strip the threads in the carburetor. When you reattach the fuel line, wrap some teflon tape around the threads in the same direction it screws on. This will seal the threads and prevent a fuel leak.

What a lot of people do is install an inline fuel filter. I used to find a good long piece of straight line and cut a piece of it out and install a universal filter. This is a lot easier to replace and will last a lot longer.

I have never done rear brake calipers on a Jaguar before, so all I can do is give you general instructions on how to do it. You can go to the local public library and look up the specifics in the service manuals they have available there.

In general replacing rear calipers are a lot like replacing the front calipers. They need to be replaced in pairs. If you replace the LR caliper, you need to replace the RR as well. There will also be the parking brake linkage to disconnect and the rear caliper pistons are screwed in, not just pushed back in like the fronts. If you are putting in new loaded calipers, that is to say calipers with the brake pads already installed, you will not have to worry about this part.

So basically what you do is disconnect the parking brake, undo and plug the brake line, and unbolt the caliper and remove it. Installation is the reverse of removal. Once everything is secure, you will need to bleed the hydraulic system. Basic bleed is done in this order:

  1. Master cylinder
  2. LF
  3. RF
  4. LR
  5. RR

Since you aren't doing anything with the front, you can get away with just bleeding the rear, but it is a good idea to do the whole system.

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Additional Information provided courtesy of AllDATA and Warranty Direct
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